<template>
  <van-button
    v-if="isFollowed"
    class="follow-btn"
    round
    size="small"
    :loading="loading"
    @click="onFollow"
    >已关注</van-button
  >
  <van-button
    v-else
    class="follow-btn"
    type="info"
    color="#3296fa"
    round
    size="small"
    icon="plus"
    :loading="loading"
    @click="onFollow"
    >关注</van-button
  >
</template>

<script>
import { addFollow, deleteFollow } from '@/assets/api/user';

export default {
  name: 'FollowUser',
  model: {
    prop: 'isFollowed',
    event: 'update-is_followed'
  },
  props: {
    /**
     * 当前关注的状态
     */
    isFollowed: {
      type: Boolean,
      required: true
    },
    /**
     * 被关注的用户ID
     */
    userId: {
      type: [Number, String, Object],
      required: true
    }
  },
  data() {
    return {
      loading: false
    };
  },
  computed: {},
  watch: {},
  created() {},
  mounted() {},
  methods: {
    async onFollow() {
      this.loading = true; // 展示关注按钮的 loading 状态
      try {
        if (this.isFollowed) {
          // 已关注，取消关注
          await deleteFollow(this.userId);
          // this.article.is_followed = false
        } else {
          // 没有关注，添加关注
          await addFollow(this.userId);
          // this.article.is_followed = true
        }

        // 更新视图状态
        this.$emit('update-is_followed', !this.isFollowed);
      } catch (err) {
        let message = '操作失败，请重试！';
        if (err.response && err.response.status === 400) {
          message = '你不能关注你自己！';
        }
        this.$toast(message);
      }
      this.loading = false; // 关闭关注按钮的 loading 状态
    }
  }
};
</script>

<style scoped lang="less"></style>
